Freezing Construction Technology of Shield Contact Channel in Intercity Railway Project
This paper takes the civil engineering in an intercity project as the main research object,and expounds in detail the key technical links of the freezing method construction and its application effect in the engineering practice.In order to deeply understand the influence of freezing construction on the connecting passage and its surrounding environment,a three-dimensional numerical model is constructed,through the model hypothesis and construction process simulation,the forming process of frozen curtain,the change of physical and mechanical properties of frozen soil and the stress state of tunnel segment during excavation are analyzed.In addition,ground settlement,wall top deformation and groundwater level were monitored during and after construction to evaluate the effect of freezing method.The results show that the excavation of connecting passage by freezing method has little influence on tunnel segments,and the freezing curtain has high strength and good stability,and can effec-tively resist the earth pressure and water pressure,ensure construction safety.
intercity railwaycommunication channelnumerical simulationfrozen soil construction technologystress and deformation
万方数据
维普
